Special-to-Type VHF/UHF LOS & UHF Satcom Antenna
30-88 MHz 108-174 MHz and 225-512 MHz Satcom 240-400 MHz
The 21-66-16 is a Special-to-Type multifunction antenna designed to fit conformally into a supersonic military aircraft. The concept is to provide a dielectric “window” (P/N 21-60-16) in the upper surface of the aircraft, through which a combined Line-of-Sight “LOS” and UHF Satcom antenna radiate, using the aircraft structure as a ground plane and reflective surface.
This antenna provides LOS frequency coverage from 30 to 512MHz in a vertical element with specially shaped, top-mounted crossed dipoles providing UHF Satcom coverage. These dipoles are decoupled at UHF but provide RF toploading at VHF to give enhanced gain in the SINCGARS 30-88MHz band.
The vertical LOS element can also be used to provide a linear polarized low-angle Satcom for Satellite capture down to horizon.
Mechanical design is such as to provide minimal airframe modifications, thus making the 21-66-16 suitable for retrofit applications.
30 - 88 MHz
108 - 174 MHz
225 - 512 MHz
240 - 400MHz
108 - 174MHz
225 - 512MHz
-5 dBi (average)
0 dBi (average)
≤ 2.5:1 (30 - 512MHz)
≤ 2.0:1 (240 - 400MHz)
|Impedance (nominal)||50 Ohms|
50 Watts (LOS)
200 Watts (Satcom)
Satcom: RH Circular
|RF Power||20 Watts CW|
|Switching Time||6 ms (from control signal)|
LOS: TNC Female
Satcom: N Female
|Overall Height of Antenna||11.2 inches (284.5mm)|
4.4 lbs (2kg) max
- Antenna - Primer protection coat